S
M
T
W
T
F
S
26
77°
53°
27
78°
56°
28
80°
60°
29
79°
61°
30
79°
59°
31
84°
61°
1
85°
60°
2
85°
61°
3
86°
61°
4
85°
60°
5
83°
54°
6
76°
53°
7
76°
52°
8
77°
54°
9
79°
53°
10
82°
53°
11
81°
54°
12
82°
59°
13
83°
60°
14
84°
59°
15
84°
60°
16
85°
59°
17
82°
59°
18
77°
54°
19
77°
54°
20
78°
55°
21
80°
59°
22
82°
58°
23
77°
52°
24
77°
54°
25
81°
58°
26
82°
50°
27
76°
58°
28
81°
60°
29
82°
59°
30
83°
58°
31
80°
57°
1
81°
56°
2
81°
57°
3
80°
54°
4
81°
56°
5
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Greenville
Greenville's August 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 50° and 61°. The average high for August is 81° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Greenville. See also: September | October | November.